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CNS 490 Standard english version introduction

CNS General No. CNS 490
Classified No. A3009
Method of test for resistance to degradation of coarse aggregate (smaller then 37.5 mm) by abrasion and impact in the Los Angeles machine
粗粒料(37.5mm以下)洛杉磯磨損試驗法
Date of Approval
Bureau of Standards, Metrology and Inspection Date of Revision
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CNS Standard Code CNS 490
CNS Standard Classified No. A3009
CNS Standard English Title Method of test for resistance to degradation of coarse aggregate (smaller then 37.5 mm) by abrasion and impact in the Los Angeles machine
CNS Standard Chinese Title 粗粒料(37.5mm以下)洛杉磯磨損試驗法
CNS Standard Edition 05/04/2009
CNS Standard Pages 5
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